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Speed of sound and phase equilibria for (CO2 + C3H8) mixtures
被引:4
|作者:
Lozano-Martin, Daniel
[1
]
Susial, Rodrigo
[1
]
Hernandez, Pedro
[1
,2
]
Fernandez-Vicente, Teresa E.
[3
]
Carmen Martin, M.
[1
]
Segovia, Jose J.
[1
]
机构:
[1] Univ Valladolid, TERMOCAL Res Grp, Res Inst Bioecon, Escuela Ingn Ind, Paseo Cauce 59, Valladolid 47011, Spain
[2] Inst Nacl Tecn Aerosp INTA, Madrid 28850, Spain
[3] Ctr Espanol Metrol CEM, Alfar 2, Madrid 2876, Spain
关键词:
Speed of sound;
Phase equilibria;
Carbon dioxide;
Propane;
Heat capacities as perfect-gas;
Acoustic virial coefficients;
Density virial coefficients;
VAPOR-LIQUID-EQUILIBRIA;
DIOXIDE PLUS PROPANE;
2ND VIRIAL-COEFFICIENT;
CARBON-DIOXIDE;
THERMODYNAMIC PROPERTIES;
SUPERCRITICAL CO2;
BINARY-MIXTURES;
PRESSURES;
TEMPERATURES;
EXTRACTION;
D O I:
10.1016/j.jct.2021.106464
中图分类号:
O414.1 [热力学];
学科分类号:
摘要:
This work presents phase envelope and speed of sound data for the (0.60 CO2 + 0.40 C3H8) and (0.80 CO2 + 0.20 C3H8) binary mixtures. Phase equilibria was measured using a cylindrical resonator working in the microwave band whereas an acoustic resonator was used for speed of sound measurements. The experimental results were compared with GERG-2008 equation of state, obtaining average absolute deviations by 0.24% in pressure for phase equilibria data and 0.025% for speed of sound data. Speed of sound values were used to derive perfect-gas heat capacities, acoustic virial coefficients, and second density virial coefficients. In addition, AGA8-DC92 equation of state performance was checked for the results derived from speeds of sound. (C) 2021 Elsevier Ltd.
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页数:15
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